Door controller



FIG. 1 is a perspective view of a door controller showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a second perspective view showing the door controller.

The broken lines in the drawings illustrate portions of the door controller that form no part of the claimed design. 

CLAIM The ornamental design for a door controller, as shown and described. 